Structural highlights
Function
[LYSC_COTJA] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Although antibodies are highly specific, cross-reactions are frequently observed. To understand the molecular basis of this phenomenon, we studied the anti-hen egg lysozyme (HEL) monoclonal antibody (mAb) D11.15, which cross-reacts with several avian lysozymes, in some cases with a higher affinity (heteroclitic binding) than for HEL. We have determined the crystal structure of the Fv fragment of D11.15 complexed with pheasant egg lysozyme (PHL). In addition, we have determined the structure of PHL, Guinea fowl egg lysozyme, and Japanese quail egg lysozyme. Differences in the affinity of D11.15 for the lysozymes appear to result from sequence substitutions in these antigens at the interface with the antibody. More generally, cross-reactivity is seen to require a stereochemically permissive environment for the variant antigen residues at the antibody-antigen interface.
Three-dimensional structure of a heteroclitic antigen-antibody cross-reaction complex.,Chitarra V, Alzari PM, Bentley GA, Bhat TN, Eisele JL, Houdusse A, Lescar J, Souchon H, Poljak RJ Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7711-5. PMID:8356074[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Chitarra V, Alzari PM, Bentley GA, Bhat TN, Eisele JL, Houdusse A, Lescar J, Souchon H, Poljak RJ. Three-dimensional structure of a heteroclitic antigen-antibody cross-reaction complex. Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7711-5. PMID:8356074
